133781951804 has 24 divisors (see below), whose sum is σ = 236435060400. Its totient is φ = 66229954560.

The previous prime is 133781951767. The next prime is 133781951833. The reversal of 133781951804 is 408159187331.

It is a happy number.

It is a super-2 number, since 2×133781951804² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505439 + ... + 723209.

It is an arithmetic number, because the mean of its divisors is an integer number (9851460850).

Almost surely, 2^133781951804 is an apocalyptic number.

It is an amenable number.

133781951804 is a deficient number, since it is larger than the sum of its proper divisors (102653108596).

133781951804 is a wasteful number, since it uses less digits than its factorization.

133781951804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219293 (or 219291 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 133781951804 in words is "one hundred thirty-three billion, seven hundred eighty-one million, nine hundred fifty-one thousand, eight hundred four".